package com.sky.controller.user;

import com.sky.constant.StatusConstant;
import com.sky.entity.Dish;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.util.CollectionUtils;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.List;

@RestController("userDishController")
@RequestMapping("/user/dish")
@Slf4j
public class DishController {
    @Autowired
    private DishService dishService;
    @Autowired
    private RedisTemplate<String,Object> redisTemplate;
    @GetMapping("/list")
    public Result<List<DishVO>> list(Long categoryId) {
        //创建key
        String key = "dish_" + categoryId;
        //先查询redis中是否有对应的数据
        List<DishVO> dishList = (List<DishVO>) redisTemplate.opsForValue().get(key);
        //有对应的数据那么就查询缓存不查询数据库
        if(!CollectionUtils.isEmpty(dishList)){
            return Result.success(dishList);
        }
        else{
            //没有对应数据，查询数据库，将数据保存到redis中
            Dish dish = new Dish();
            dish.setCategoryId(categoryId);
            dish.setStatus(StatusConstant.ENABLE);//查询起售中的菜品
            List<DishVO> list = dishService.listWithFlavor(dish);
            redisTemplate.opsForValue().set(key,list);
            return Result.success(list);
        }
    }

}
